Nonylphenol stimulates fecundity but not population growth rate (λ) of Folsomia candida

T. H. Widarto, P. H. Krogh, V. E. Forbes

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

The toxicity of nonylphenol (NP) to springtails was pronounced at 40 mg/kg dry weight soil, at which no animals survived. Body length and fecundity were the individual life-history traits significantly stimulated by sublethal concentrations of NP during a 64-day experiment. However, the effects of NP on these traits did not result in a statistically significant increase in population growth rate (λ). Decomposition analysis indicated that fecundity was the main contributor to the (non-significant) changes observed in λṡ However, since the elasticity of fecundity was very low, large changes in fecundity resulted in a minimal effect on λṡ Juvenile survival had the highest elasticity of all traits, but was not affected by NP, and therefore did not contribute to effects on λ. This study confirms previous studies showing that effects of chemicals on individual life-history traits are attenuated at the population level and that λ is an appropriate endpoint for ecotoxicological studies.

Original languageEnglish (US)
Pages (from-to)369-377
Number of pages9
JournalEcotoxicology and Environmental Safety
Volume67
Issue number3
DOIs
StatePublished - Jul 2007

Keywords

  • Elasticity
  • Folsomia
  • Hormesis
  • Life-history
  • Population dynamics

Fingerprint Dive into the research topics of 'Nonylphenol stimulates fecundity but not population growth rate (λ) of Folsomia candida'. Together they form a unique fingerprint.

Cite this